Rolling-mill



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Y ROLLING MILL.

(No Model.)

Patentqd Aprl 2, 188.9'. A

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(Nol Model.)

No. 400,495. Patented Ap.' 2,v 1889.

INVENTOR.

UNITED STATES PATENT OEEICE.

JOSEPH S. SEAMAN, OF PITTSBURG, PENNSYLVANIA.

ROLLING-MILL.

SPECIFICATION forming part of Letters Patent No. 400,495, dated April 2, 1889.

Application filed February 8, 1889. Serial No. 299,143. (No model.)

fo @ZZ whom it may concern:

Beit known that I, JOSEPH S. SEAMAma citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discovered certain new" and useful Impovements in Rollother, and, furtheigthe rotation of the vertical rolls is effected by the conjoint action of the horizontal rolls and theV metal Vbeing rolled in frictional contact with the vertical rolls. In order to effect these several functions, the horizontal rolls are provided with collars having their inner faces beveled, the inner faces of the rims of the vertical rolls being correspondingly beveled. These beveled faces on the horizontal and vertical rolls work in contact with each other, the collars on the horizontal rolls serving as a backing or brace for the operative rims of the vertical rolls, said rims being made quite thin at their edges and merging, as it were, into the beveled faces of the horizontal rolls, in order to prevent the forination'of iins on the article being rolled. *It sometimes happens in spite of the rm support aiforded by the collars of the horizontal rolls that these thin edges of the rims of the vertical rolls are broken, thereby rendering the roll useless for further use.

The invention described herein relates to a construction of the vertical rolls whereby the edges of the article being rolled along one side thereof are so shaped during one pass as to avoid all liability of the formation of a fin during the next pass, or, in other words, the edges of the article along one side thereof are worked back during one pass to or approximately to or even beyond the iinishing line of the next pass. In this manner the formation of ns is prevented, or in case partial fins are formed during4 one pass they are reduced and obliterated in the next pass.

In the accompanying drawings, forming a' part of this specification, Figure 1 is a view, partly in elevation and partlyin section, of rolls constructed to roll I-bealns and embodying my invention, a portion only of the horizontal and vertical rolls being shown, said rolls being adjusted to the position they occupy at the beginning of the rolling operation. Fig. 2 is a view similar to Fig. l, the rolls being adjusted together for the finishing passes; and Fig. 3 is a view, partly in elevation and partly in section, of a three-high mill embodying my invention. As the construction of the housings and the manner of mounting therolls therein are fullyand particularly shown and described in Letters 'Patent No. 318,513, hereinbefore referred to, and as the invention described herein refers solely to t-he construction of the rolls employed, no illustration of the manner of mounting the rolls is deemed necessary.

Although the invention is, for convenience, described as applied to rolls for reducing I- beams, it can be readily applied by the skilled mechanic to rolls suitably shaped as regards their faces operative on the metal for the reduction of other structural shapes.

At the ends of the portions 1*L and 1b of the rolls A and B, operative in forming the web of the beam, are formed grooves 2 and 2b, the adjacent sides, 3a and 3b, of the portions 1, operative in shaping the inner faces of the flanges of the beam, being slightly beveled and terminating in shoulders 4 and ab, the length of such vertical sides being equal to the depth of flange desired in the finished beam. The operative faces of the shoulders 4:@ of the roll A are made straight or approximately parallel with the axis of the roll, and of considerable width, as they form the faces for finishing the edges of the beam-flanges. The operative faces of the shoulders 4b of the roll B are slightly beveled, and are made quit-e narrow, their width bein g approximately equal to half the thickness of the finished iiange at the edge thereof. This shoulder 1lb operates in the finishing passes as a iillet, and partially forms the edges of the flanges.

At the outer ends of the shouldes 4 and 4J IOO are formed auxiliary grooves 5 and 5". The walls of the groove 5 of the roll A, being practically a continuation of the groove 2, are beveled, as shown, while the inner wall of the groove 5", which is a continuation of the groov 2 of roll B, is made vertical, and its outer wall beveled at the same inclination as the outer wall of the grooves 2 and 5. The grooves 2 5 and 2" 5 form collars 6" and G" at the ends of the rolls A and B, having beveled inner faces, 7L and 7" and vertical or approximately vertical outer f aces, as shown.

The vertical rolls C, which are counterparts of each other, consist of disks S, having thickened rims 9. These rolls, as shown and described in the Letters Patent hereinbefore referred to, are so mounted in the housings that rims 9 operate within the grooves of the horizontal rolls, and the inner faces, 10n and l0", of the rims are beveled at an equal angle with the angle of the faces 7 and 7" of the horizontal rolls.

In the construction of rolls shown and described in the patent hereinbefore referred to the beveled faces 7l and 7" were, in addi- .tion to what might be termed their driving, adjusting and supporting functions, employed as fillets operating on the outer edges of the anges to prevent any finning at such points, and in order that said faces might effect such function it was necessary that the edges of the rims of the vertical rolls should be made very thin and should merge into the beveled faces 7 and 7 thereby i rendering the vertical rolls weak at said places. In order to increase the strength of the edges of the rims i), the grooves 2@ and 2" in my improved construction are made considerably wider than in the construction set forth in the patent referred to, and the rims i 9 are correspondinglyincreased in thickness.

As 1t is necessary in a mill having its vertical rolls operating between the horizontal rolls that portions of the horizontal rolls should be employed in reducing and finishing the edges of the fianges, it follows that the portions 11 of the faces of the rims 9, operative in finishing the outer walls of the flanges, cannot have a length greater than the width of the flanges; or, in other words, the portions 11 of the faces of the rims 9 should have a length equal to the distance between the shoulders 4" and 4" of the rolls A and B when the latter have been adj usted in proper relation to each other for the finishing passes, so that the ends of the portions 11 of the rims 9 will be brought into line with the surfaces of the shoulders a and at" during the finishing passes, said shoulders being constructed to edge and finish the flanges. It follows from the foregoing that when the rolls A and B are separated, as they are except during two or three final passes, and the vertical rolls moved outwardly, there will be open spaces between the shoulders 4" and 1" and the ends of the portions 11 of the rims 9, into which the metal could be forced and fins formed. In my former construction the spaces were occupied by the beveled lfaces 7l and 7"; but

the thickening of the rims prevents the emc ployment of the faces 7LL and 7" for such purposes; hence, in order to prevent any finning in the use of my improved rolls, the rims f) are increased in length, as at 12, on one side of the median line represented by the line ,1; rr, Fig. 1. These additions 12 to the lengths of the portions 11 of the rims, which should be of such an amount as to avoid all liability of any metal being forced around the edges of the rims on those sides of the vertical rolls, enter the auxiliary grooves 5" of the rolls B, said grooves being formed for that purpose. Any metalwhich may be forced down beyond the portions ll of the rims i) in one pass will be forced back in thenext pass bythe shoulders l, the beam being turned over for such pass, as is the usual practice in the use of a two-high mill.

In order to prevent any metal being forced around the unextended edges 13 of the rims 9, shoulders 14 are formed on the extensions or additions 12 of the rims 9, said shoulders projecting beyond the operative faces of said rims an amount approximately equal to or even greater than the reduction effected by the vertical rolls at one pass. As shown Ain the drawings, the shoulders 14 are entirely outside of the operative faces 1'1 of the vcrtical rolls, said shoulders beginning at the end of said operative faces or at a distance of the edges 13 therefrom.

It will be readily understood that whenever in the rolling operation any metal is forced outwardly beyond the operative faces 11 and within the scope of the operation of the shoulders 111 such metal will be forcedinwardly by said shoulders to or approximately to the line of finish of the next pass, and that when the beam is turned one hundred and eighty degrees and inserted between the rolls for the next pass the recesses in the beam will come opposite the open spaces between the shoulders l of lthe roll A and the edges 13 of the rims 9 of the vertical rolls, and as the depth of said recesses in the flanges of the beam is equal or approximately equal to or even greater than the amount of reduction to be effected in the pass the portions lof vthe beam operated 0n. by the shoulders 14 in the previous pass will not be effected; but the other portions of the iiange will be worked back to or approximately to the same line of finish as the bottom of the recess. In case any metal should during any of the passes be forced out between the shoulders et" and the edges 13 the metal so pressed out will be at the next pass subjected to the action of the shoulders 14 and be reduced thereby.

The extensions 12 on one edge of the rims 9 and the auxiliary grooves 5", formed for the reception of such extensions, permit of a considerable increase in the length of the beveled faces 7 and 10", and in order to correspond- IOC IIO

ingly'increasethe length of the faces 7 and 10 the grooves *5l are formed in the roll A and the rims 9 of the vertical rolls are provided with extensions 15, having their outer faces coinciding with the faces 10, It will be noticed that in my improved construction of rolls the beveled faces 7 and 7b are employed solely for rotating, adjusting, and holding the vertical rolls totheir work.

In reducing beams in my improved mill the edges of the flanges are reduced and shaped almost entirely by the shoulders4"L of the roll A, the shoulders 4b of the rollB and 14 of the vertical rolls contributing very slightly in the reduction and shaping of the fiange edges, exceptduring the last three or four passes, when said shoulders are brought together, as shown in Fig. 2. As the shoulders 4b and 14 are beveled, a slight bead willbe formed along the edges of the iian ges hence it is better to give the beam two finishing passes, in order to subject all the edges of the iianges to the action of the shoulders 4, which will reduce any bead previously formed on the edges of the iianges, said shoulders 4n being made straight and adapted to reduce the flanges slightlybeyond` the line of finish effected by the shoulders 4b. and 14. i'

As shown in Fig. 3, my invention is readily applicable to athree-high mill, the upper and lower horizontal rolls being the same in size and construction, and the vertical rolls eml ployed between the middle and lower horizontal rolls being reversed as regards position and operation, and hence it is not generally necessary to turn the beam between passes. If desiredthe shoulders 14 may be made to project beyond the operative faces 11 of the rims 9 a distance equal to the width of the, operative faces of the 'shoulders 4a during the finishing passes, in which case the shoulders 4b will be omitted, the beveled faces 3b being extended down to thebottoms of the grooves 4b.

' While the rolls have been described with mathematical exactnesss as regards the relative proportions and dimensionsof the dierent parts of the several rolls, such proportions and dimensions can be greatly Varied without a departure from my invention.

I claim herein as my inventionl. In a metal-rolling machine, a vertical roll having a shouldered extension, 14, and operatively arranged between the ends of a pair of horizontal rolls, substantially as set forth.

2. In a metal-rolling machine, avertical roll having ashouldered' extension, 14, in combination with a pair of horizontal rolls, one of the horizontal rolls having a shoulder, 4a, at the end of its operative portion lsubstantially as set forth. v

3. In a metal-rolling machine, avertical roll having a shouldered extension, 14, in combination with a pair of horizontal rolls having shoulders 4 and 4 at the ends of the operative portions 1a and lb, respectively, substantially as set forth.

4. In a metal-rollin g machine, a vertical roll having a shouldered extension, 14, and inl wardly-beveled rims, in combination with a pair of horizontal rolls having beveled collars at or near their ends, one of the horizontal rolls having an edging-shoulder, 4, substantially as set forth. l

5. In a metal-rolling machine, a vertical roll recessed at its ends and having extensions 14 and 15, in combination with a pair of horizontal rolls having grooves 2n and 2b and auxiliary grooves 5a and 5b, one of the horizontal rolls having an edging-shoulder, 4a, substantially as set forth.

In testimony whereof I have hereunto set my hand. p JOSEPH S. SEAMAN.

Witnesses:

DARWIN S. WoLco'rT,

R. H. WHITTLESEY. 

